Effect of Hot Forging on Mechanical Characteristics of Al6061-TiO2Metal Matrix Composite

Bharathesh, T.P.; Ramesh, C.S.; Keshavamurthy, R.; Verma, Shyamlal

doi:10.1016/j.matpr.2015.07.170

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…12 also shows that the hardness of al6061-nano al 2 o 3 composites increases by heat treatment and forging of the nanocomposites. the results have a similar trend as reported by other researchers [18][19][20]. the forging increases hardness due to grain refinement, strain hardening effect, decrease in porosity, higher densification, and improvement in bonding between matrix and reinforcement particles.…”

Section: Hardnesssupporting

confidence: 90%

Archives of Metallurgy and Materials

2022

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Fabrication and characterization oF al6061-nano al 2 o 3 composites by Ultrasonic assisted stir casting Followed by heat treatment and hot Forging the present work comprises the development of al6061/nano al 2 o 3 composites with 0 to 4 weight percent in steps of 0.5 wt. % of nano alumina particles by using ultrasonic assisted stir casting. Casted samples were subjected to heat treatment and hot forging. Further forged and heat-treated gear blanks of nano al 2 o 3 (0 to 3.0 weight %) reinforced nanocomposites were machined to make spur gears for the wear test. the results have shown that nano al 2 o 3 reinforcement in the al6061 matrix with heat treatment and forging improves the hardness and compressive strength up to 3.5 wt. %, after that, it starts decreasing because of the agglomeration of nano alumina particles. seM results reveal grain refinement of the pure alloy after reinforcement. Removal of porosity and voids observed after forging operation. Wear resistance increasing with incorporation of al 2 o 3 nanoparticles in base alloy, reinforcement wt. %, precipitation hardening and hot forging also improves wear resistance and mechanical properties. these composites have widespread applications in gear, brake discs, crankshaft, clutch plates, pistons, and other components of automobiles and aircraft structures.

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Section: Hardnesssupporting

confidence: 90%

Archives of Metallurgy and Materials

2022

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“…Moreover, the yield strength and tensile strength of the composites increased with the increasing volume fraction of SiCp up to 17 vol.% and then decreased with further addition of reinforcement. Bharathesh et al [15] reported that the microhardness and tensile strength of a hot-forged Al-8 wt.% TiO 2 (20-60 µm) composite were higher than those of the matrix material, whereas the ductility was lower. Ceschini et al [16] investigated the effect of hot forging on the microstructure and tensile properties of AA2618 aluminum alloys reinforced with 20 vol.% Al 2 O 3 (20 µm) at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoparticle Content on the Microstructural and Mechanical Properties of Forged and Heat-Treated TiC/2219 Nanocomposites

Yang

Jiang

et al. 2019

Metals

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In this study, castings of TiC nanoparticle reinforced 2219 aluminum matrix composites with different TiC nanoparticle contents (0, 0.5, 0.9, 1.3, and 1.7 wt.%) prepared using an ultrasound-assisted stirring technology were deformed by multidirectional forging at 510 °C followed by T6 aging treatment. The microstructural evolution and mechanical properties of the 2219 alloy and its composites were investigated and compared. Optical microscopy and scanning electron microscopy revealed that the composite with 0.9 wt.% TiC nanoparticle content possessed finer grains and the lowest amount of Al2Cu phases. The electron backscattered diffraction (EBSD) was used to characterize the sub-grains. The precipitation microstructures of the 2219 alloy and composites with different nanoparticle contents were characterized by differential scanning calorimetry and transmission electron microscopy. It was found that 0.9 wt.% TiC/2219 nanocomposites contained the highest amount of θ″ and θ′ phases with shorter lengths. This might imply that the nanoparticles uniformly dispersed in the matrix could facilitate the precipitation of θ″ and θ′ phases during aging. Thus, the 0.9 wt.% TiC/2219 nanocomposite showed the best mechanical properties. The ultimate tensile strength, yield strength, and elongation of the 0.9 wt.% TiC/2219 nanocomposite increased by 24.2, 46.1, and 37.2%, respectively, compared to those of the 2219 alloy.

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Friction and Wear performance of Hot Extruded AA7075/AIN/Gr Hybrid Composites

Kamble

Kumar

et al. 2022

J. Inst. Eng. India Ser. D

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Effect of Hot Forging on Mechanical Characteristics of Al6061-TiO2Metal Matrix Composite

Cited by 9 publications

References 12 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of Nanoparticle Content on the Microstructural and Mechanical Properties of Forged and Heat-Treated TiC/2219 Nanocomposites

Friction and Wear performance of Hot Extruded AA7075/AIN/Gr Hybrid Composites

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